56857828 has 24 divisors (see below), whose sum is σ = 102362400. Its totient is φ = 27622848.

The previous prime is 56857783. The next prime is 56857831. The reversal of 56857828 is 82875865.

It is a happy number.

56857828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19651 + ... + 22357.

It is an arithmetic number, because the mean of its divisors is an integer number (4265100).

Almost surely, 2^56857828 is an apocalyptic number.

It is an amenable number.

56857828 is a deficient number, since it is larger than the sum of its proper divisors (45504572).

56857828 is a wasteful number, since it uses less digits than its factorization.

56857828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2859 (or 2857 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 49.

The square root of 56857828 is about 7540.4129860373. The cubic root of 56857828 is about 384.5298764947.

The spelling of 56857828 in words is "fifty-six million, eight hundred fifty-seven thousand, eight hundred twenty-eight".